Welcome to the site. Not sure you're in the right forum either, but your post will be moved about if not.

I drive a 1.6 petrol, not a 2.0, and you should definitely not buy a 1.6 with auto, as the engine would not be powerful enough. I would also think that most on this site would definitely recommend that you get a 2.0 diesel, if you have to go down the auto route. True, a diesel costs more initially, but I would have thought that the extra torque and MPG would improve your enjoyment of and cost of running the car no end. Of course, the maths might not add up for you, but I would seriously consider either extending your budget, or going second hand. Lots of good, low mileage, one year old CMaxes about at the moment.

You may or may not know that a new CMax is due out in 12 months time, with new and better [maybe] engines, so you might think about hanging on for a year before purchasing. Also the present versions will presumably be cheaper when the new version is launched.

Do remember toASK TO BE INCLUDEDthe no cost (ONLY NO cost if ordered from the factory & NOT the dealer)space save spare wheel and jack as opposed to the punture repair kit and even if it is not in the spec you pick do consider having the heated front screen and perhaps the heated rear mirrors
You might also consider having the dipping instrument panel illumination (It can be a little bright for some)but you then have to have front fog lights s well

I drive the 1.6 diesel manual that is still quite happy at more thatn the ACPO upper limit on the motorway and I think would have another rather than the 2L which seems a more complicated engine control system

Should have also said
If you go for a diesel auto fo try to get a test drive that includes accelerating onto a motorway because the couple of times I drove a diesel disco auto some years go in such circumstances it is a little discerting when it just won't accelerate as fast as you'd like. You end up using the box like a manual

The "Spacesaver" spare wheel and jack is a "No Cost" factory alternative that is only available at no cost if you order it with the car. The dealers do not / cannot get it added afterwards if you change your mind